Flushing-valve.



yW. J. BRFIIT'JZ. PLUSHING VALVE. APILIOATION FILED MARJB, 1913.

Patented Jly 7, 1914.

THE NURRIS PETERS CO.. PHOTO-LITHO. WASHINGTON. D. C

Ulli@ STARS PATET @hhllmll 'WILLIAM JOHN BRETT, OF COVENTRY, ENG-LAND, ASSIGNOR TO FRANK JELLINGS, 0F LEEDS, ENGLAND.

FLUSI-IING-VALVE.

License.

Application filed March 18, 1913.

To all whom t may concern Be it known that 1, VViLLiAM JOHN Bnn'rr, residing at 1 Albany road, Cov` entry, in the county of Warwick, England, have invented a new and useful Improvement in Flushing-Valves, of which the following is a specification.

This invention has reference to the valves of flushing cisterns, water waste preventers and the like and more particularly tothe type of valve which is made in two parts, one of which is mounted looselyv on the valve rod and is adapted to close the valve orifice while the other part is attached to the valve rod and normally takes a seating upon the loose part for the purpose of preventing leakage taking place between the latter and the valve rod when the valve as` a whole is closed. `While this type of valve when completely closed is and the loose part of the valve leakage to a more or less extent is liable to take place where for any reasonthe part of the valve which is fixed to and moves with the valve rod has an imperfect seating on the loose part or where the valve is left o-r held partly open, z'. e. with the fixed part of the valve out of contact with the loose part.

The object of this invention is to provide against the aforesaid contingencies and without in any way aecting the function of the valve as a. whole to design the valve in such a manner that the possibility of leakage under such circumstances as above referred to is completely avoided.

ln order that my invention may be clearly understood and readily carried into effect reference is made in describing the same to the accompanying drawing which represents in central vertical section a flushing cistern embodying the present invention.

Referring to the drawing, 2 represents the hollow body of the cistern and 3 the cover which is bolted to the flanged upper edge of the cistern so as to make the latter completely air-tight and has formed with it a central depending tubular chamber f1. This chamber is in open communication at the top with the water supply main and is provided at its lower end which extends almost to the bottom of the cistern, with lateral ports 5 and an internal brass bush 6 in which works the admission and cut-off Specification of Letters Patent.

sufficiently water-tight it is conceivable that owing to` the necessary loose lit between the valve rod Patented July 7, 1914.

Serial No. 755,263.

valve 7 for controlling said ports. The valve may conveniently be formed integral with the upper part 8 of the two part delivery valve the lower part 9 of which is mounted loosely on the valve rod 10 and is not raised thereby to open the delivery orifice until after the admission valve has closed the ports 5 and thereby cut o the cistern from the supply main.

1n order to render the two part delivery valve completely water-tight especially when left partly open, z'. c. with the upper part 8 of the valve raised fromkits seating on the lower part 9, the said lower part is provided with a sleeve extension 11 which has a sliding lit on the valve rod and passes through the delivery valve orifice, its free end entering and working within an enlarged part 12 of the bore in the stuffing box 13 through which the valve rod passes. The said sleeve extension 11 may be made either in one piece with the loose valve part 9 or separately and secured thereto by a screw thread and nut 14 as shown or in any other suitable manner.

ln the above described construction the body of the loose valve part is preferably recessed at 15 to accommodate the stop 16 on the valve rod whereby the said loose part of the valve is raised from its lseat subsequently, to the lifting of the fixed valve part 8 and the simultaneous closing of the ports 5 by the admission valve 7. rllhe `recessed face of the loose valve part is closed by a plate 17 which forms the necessary abutment against which the stop 16 makes Contact during the opening movement of the valve rod. f

18, 19 are valve seatings formed of leather or any other suitable material and which are held in position respectively by the sleeves 20 and 21 as shown.

The valve 7 and two part delivery valve 8 and 9, and valve rod 10 are raised by the lever 21 connected by the link 22 to the projection 23 on the undersurface ofthe delivery portion 24 of the cistern. The action of the apparatus is as follows :-The water from the main source of supply enters the interior of the. tubular chamber 4 and passes into the cistern 2 through the lateral ports 5 until the .cistern is lilled to the required height. ,lJVhenfy it is desired to use the water in the cistern for flushing purposes the free' end of lever 21 is depressed and by the connection of the lever with valve rod the latter is raised and valve 7 closes the ports 5 before the lower part 9 of the two part delivery valve is raised. The first movement of the valve rod 10 will raise the upper portion of the two part delivery valve until the stop 16 comes in contact with the plate 17. When this contact takes place the ports 5 will have been closed. The continued upward movement of the valve rod l0 raises the lower part 9 of the two part delivery valve and lifts the valve clear of the valve seating 25, thus permitting the water in the cistern to pass into and escape through the delivery portion '24. On the valves being returned to the normal position shown in the drawing the ports 5 will be again opened for the admission of water through tubular chamber 4 into the interior of the cistern 2.

What I claim is 1. Ina flushing cistern having a removableJ cover and a discharge opening in its base, the combination therewith of a water inlet tube pendent from said cover and provided with a valve seat and outlet ports at its lower end, a delivery valve formed in two independently movable parts, the lower of said parts controlling the outflow through said discharge opening, having a recess in its upper face and a perfo-ration through said part continuous with said recess, a disk for closing said recess, a spindle slidable to a limited extent through said perforation rigidly secured to said upper part for opening the saine and having a projection within the recess to engage said disk to raise the lower part of the valve, and an inlet valve continuous with said upper part of the discharge valve adapted to close the outlet ports in the inlet valve pipe before the discharge is opened when the spindle is raised, and open said ports after the discharge is closed when the spindle is lowered.

2. The combination of a fiushing cistern provided with a removable cover and having an opening in its base, a tubular chamber pendent from said cover and having a bushing at its lower end and provided with lateral ports, a delivery portion fixed to the base of said cistern and having an outlet at its upper end to the upper portion of the delivery valve and arranged to pass through the extension sleeve and gland of the delivery outlet, a stop fixed on the spindle arranged to work in the recess of the lower portion of the delivery valve, a plate fixed to the top of the'said lower portion and arranged to cover the recess therein and means for operating the said spindle and valves as;

described.

`WILLIAM JOHN BRETT.

`Witnesses i i l/V. FAIRBURN HART, WILLIAM' SADLER.

o'p'iel of this patent may be' obtained for rive cents dach, b'y addressing the' Commissioner of Patents.

Washington, D. C.V 

